EP2887419B1 - Batterie d'acide de plomb - Google Patents
Batterie d'acide de plomb Download PDFInfo
- Publication number
- EP2887419B1 EP2887419B1 EP14194733.3A EP14194733A EP2887419B1 EP 2887419 B1 EP2887419 B1 EP 2887419B1 EP 14194733 A EP14194733 A EP 14194733A EP 2887419 B1 EP2887419 B1 EP 2887419B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- container
- lead
- acid battery
- corner
- outer walls
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 239000002253 acid Substances 0.000 title claims description 54
- 230000002093 peripheral effect Effects 0.000 claims description 37
- 239000008151 electrolyte solution Substances 0.000 claims description 22
- 230000009969 flowable effect Effects 0.000 claims description 5
- 238000007789 sealing Methods 0.000 claims description 4
- 238000005336 cracking Methods 0.000 description 14
- 238000005192 partition Methods 0.000 description 9
- 230000004308 accommodation Effects 0.000 description 8
- 230000008014 freezing Effects 0.000 description 6
- 238000007710 freezing Methods 0.000 description 6
- 239000012141 concentrate Substances 0.000 description 5
- 239000007788 liquid Substances 0.000 description 5
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 4
- 230000007613 environmental effect Effects 0.000 description 4
- 230000007423 decrease Effects 0.000 description 3
- 230000005484 gravity Effects 0.000 description 3
- 229910000978 Pb alloy Inorganic materials 0.000 description 2
- 230000002950 deficient Effects 0.000 description 2
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229920003002 synthetic resin Polymers 0.000 description 2
- 239000000057 synthetic resin Substances 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 239000011149 active material Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 230000008719 thickening Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/06—Lead-acid accumulators
- H01M10/12—Construction or manufacture
- H01M10/16—Suspending or supporting electrodes or groups of electrodes in the case
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/06—Lead-acid accumulators
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/06—Lead-acid accumulators
- H01M10/12—Construction or manufacture
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M2220/00—Batteries for particular applications
- H01M2220/20—Batteries in motive systems, e.g. vehicle, ship, plane
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/10—Primary casings; Jackets or wrappings
- H01M50/147—Lids or covers
- H01M50/166—Lids or covers characterised by the methods of assembling casings with lids
- H01M50/169—Lids or covers characterised by the methods of assembling casings with lids by welding, brazing or soldering
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
Definitions
- the present invention relates to a technique for suppressing a crack of a container.
- Electrolyte solution containing dilute sulfuric acid and included in a lead-acid battery typically tends to have a higher freezing point at lower specific gravity.
- the electrolyte solution in the lead-acid battery is occasionally frozen and increased in volume in a cold region. This causes a problem that a corner of a container is likely to crack.
- overdischarge discharge of or exceeding a rated capacity
- a container is defined in outer shape by a standard and the container can be thickened only inward in some cases.
- GB 398 630 A describes a lead-acid battery with a power generating element and a container accommodating the power generating element and having a narrower portion that is partially provided at an outer wall and reduces an internal space.
- the container of said lead-acid battery also has inwardly thickened corners between its outer walls and its bottom wall.
- JP2007227394 refers to a lead acid battery with a narrowing down the casing part and JP2007227394 to a secondary battery with an inside convex part provided in each corner part in the inner space of the battery can.
- the present invention has been made in view of the circumstances mentioned above, and an object thereof is to keep insertability and size of an electrode plate as well as suppress a crack at a corner of a container.
- the present invention provides a lead-acid battery with the features of claim 1.
- the lead-acid battery according to the aspect can keep insertability and size of an electrode plate as well as suppress a crack at the corner of the container.
- the lead-acid battery includes: a power generating element; and a container accommodating the power generating element and having a narrowed portion that is partially provided at an outer wall and reduces an internal space.
- the container has a corner of a thick portion that is thickened inward within a range not inwardly beyond the narrowed portion to be thicker than the outer wall.
- the corner of the container is thickened and is thus unlikely to crack. Furthermore, the corner of the container is thickened inward and the container does not need to be changed in outer shape. Moreover, the corner of the container is thickened within the range not inwardly beyond the narrowed portion. The container is thus not reduced in accommodation space.
- This configuration can keep insertability of the power generating element as well as suppress a crack at the corner of the container. The power generating element is also kept in size and the battery can be thus kept performance thereof.
- the corner has an inner peripheral surface located outside an inner peripheral surface of the narrowed portion in the internal space. This configuration achieves insertability of the power generating element more easily.
- the corner equal in thickness to the outer wall has an inner peripheral radius defined as a reference radius
- the inner peripheral radius of the corner is larger than the reference radius in a range not inwardly beyond the narrowed portion.
- the corner has an arc shape at the inner periphery in this configuration. Stress is thus unlikely to concentrate at one point and the corner of the container can be further suppressed from cracking.
- the corner has an inside slanted from the outer wall within a range not inwardly beyond the narrowed portion.
- the inside of the corner is slant in this configuration. Stress is thus unlikely to concentrate at one point and the corner of the container can be further suppressed from cracking.
- the container comprises a plurality of outer walls and a bottom wall, and has a box shape with an opening in one direction, the narrowed portion is disposed at a bottom side of the outer walls, and in the corner at which two of the outer walls forming the container intersect, a portion closer to the opening than the narrowed portion comprises the thick portion.
- the volume of the container is larger at a top side that is closer to the opening than the bottom side.
- a portion of the corner closer to the opening and top side than the narrowed portion comprises the thick portion.
- the corner closer to the opening side where a crack is likely to occur is reinforced by the thick portion, and therefore the container is further suppressed from cracking.
- the thick portion has an entire length in an extending direction of the corner, the entire length being longer than an entire length of the narrowed portion in the extending direction of the corner.
- a long and easily cracking portion is thickened as the thick portion in this configuration. The corner of the container can be thus further suppressed from cracking.
- the power generating element is an element that includes a positive electrode plate and a negative electrode plate alternately layered with a separator being interposed therebetween, and the narrowed portion of the container is narrowed in a direction crossing with a layered direction of the element.
- the element has a width set in accordance with the width of the narrowed portion.
- the thick portion in this configuration is formed within the range not inwardly beyond the narrowed portion. The element does not need to be reduced in width and the battery can be kept in performance.
- the container accommodates flowable electrolyte solution.
- a container of a liquid lead-acid battery contains a large amount of electrolyte solution and is thus largely affected by expansion in volume. This configuration is thus suitable for such a liquid lead-acid battery.
- the lead-acid battery further includes a lid member sealing an opening of the container.
- the thick portion is located closer to the opening of the container than the narrowed portion, and the lid member includes a rib joined to the outer wall of the container, and an outer peripheral wall that is spaced apart from the rib and surrounds the outer wall of the container. If no thick portion is provided near the opening of the container, there is a gap between the rib to be joined to the lid member and the outer peripheral wall, and the area near the opening of the container is likely to warp. In contrast, the thick portion is provided near the opening of the container in this configuration, in which the container is less likely to warp and the corner of the container can be further suppressed from cracking.
- the embodiment 1 is described with reference to Figs. 1 to 7 .
- a lead-acid battery 10 is applied to a vehicle and includes a container 20, an element 40 functioning as a power generating element, and a lid member 50, as shown in Figs. 1 to 3 .
- a layered direction of plates 40A and 40B (a transverse width direction of the container 20) is called an X direction and a direction perpendicular to the layered direction of the plates 40A and 40B (a depth direction of the container 20) is called a Z direction.
- an extending direction of an outer wall 21 (a height direction of the container) is called a Y direction.
- the extending direction of the outer wall 21 corresponds to a direction of the container 20 extending from a bottom wall 22 toward the distal end of the outer wall.
- the container 20 is made of synthetic resin.
- the container 20 has four outer walls 21A to 21D and the bottom wall 22, and has a cuboid box shape with an open top surface.
- the container 20 has the interior divided into a plurality of cell chambers 25 by partitions 23.
- the element 40 is located so as to have its plate surface in a YZ direction with respect to the cell chambers 25, and includes the positive electrode plate 40A, the negative electrode plate 40B, and a separator 40C dividing the plates 40A and 40B.
- the positive electrode plate 40A and the negative electrode plate 40B are alternately layered in the X direction with the separator 40C being interposed therebetween.
- the plates 40A and 40B each have a grid filled with an active material, and are provided at the tops with lug portions 41A and 41B, respectively.
- the lug portions 41A and 41B are provided to couple the plates 40A and 40B having same polarity by way of straps 42 in the cell chambers 25.
- the outer walls (perpendicular to the partitions 23) 21B and 21D located at the respective ends of the container 20 in the Z direction are each provided with a proximal portion 31, a tapered portion 34, and a narrowed portion 33.
- the proximal portion 31 has a linear shape in the Y direction and is formed in a range of a size H1 indicated in Fig. 3 .
- the proximal portion 31 is formed to extend in the entire width of each of the outer walls 21B and 21D (the entire width in the X direction).
- the narrowed portion 33 is formed below the proximal portion 31.
- the narrowed portion 33 is recessed inward from the proximal portion 31 of the container 20, and decreases the internal space of the container 20 by a recessed amount (a size F indicated in Fig. 4 ). More specifically, the narrowed portion 33 decreases the internal space of the container 20 in the Z direction in Fig. 3 (the width direction of the plates 40A and 40B).
- the narrowed portions 33 are parallel to the proximal portion 31 of the outer walls 21B and 21D, and are each formed in the range of a height H2 from the bottom of corresponding one of the outer walls 21B and 21D.
- the narrowed portions 33 are formed to extend in the entire width of the outer walls 21B and 21D (the entire width in the X direction).
- the tapered portion 34 is formed between the proximal portion 31 and the narrowed portion 33.
- the proximal portion 31 and the narrowed portion 33 are connected with the tapered portion 34 having a slant surface being interposed therebetween. There is thus no uneven surface between the proximal portion 31 and the narrowed portion 33.
- the narrowed portion 33 is provided therebelow with legs 35.
- the legs 35 bulge outward from the narrowed portions 33 of the container.
- the legs 35 each have the lower surface flush with the bottom wall 22 of the container 20 and serve to stably support the container 20.
- the legs 35 each have the upper surface provided with a screw hole 35A and are screw fastened to fix the lead-acid battery 10 at a predetermined position to be attached.
- the outer walls 21A and 21C located at the respective ends of the container 20 in the X direction are provided with no narrowed portions 33.
- the outer walls 21A and 21C are substantially flat, although the outer walls 21A and 21C each have a plate flange 37 at the top and the legs 35 at the bottom.
- the lead-acid battery 10 is in conformity to the European standards, and the outer shape of the container 20 is defined in detail by the European standard (EN50342-2).
- the outer shape of the container 20 is inclusive of the shapes of the narrowed portions 33 and the corners 27 (the arc shapes of the outer peripheral surfaces), and is defined entirely by the European standard.
- the lid member 50 is made of synthetic resin, and includes a main body 51 sealing the upper surface of the container 20, and outer peripheral walls 55A to 55D formed along the outer peripheral edge of the main body 51, as shown in Fig. 1 .
- the lid member 50 has a rear surface provided with ribs 52A to 52D and lid partitions 54.
- the ribs 52A to 52D are projections each having a predetermined width and protruding downward from the rear surface of a proximal portion of the lid member 50, and are provided so as to correspond to the outer walls 21A to 21D of the container 20, respectively.
- the lid partitions 54 are walls each having a predetermined width and protruding downward from the rear surface of the lid member 50, and are provided so as to correspond to the partitions 23 of the container 20.
- the ribs 52A to 52D have the lower end surfaces abutting against the upper end surfaces of the outer walls 21A to 21D of the container 20, whereas the lid partitions 54 have the lower end surfaces abutting against the upper end surfaces of the partitions 23 of the container 20.
- the outer peripheral walls 55A to 55D extend downward from the outer peripheral edge of the main body 51.
- the outer peripheral walls 55A to 55D are spaced apart by a gap G from the ribs 52A to 52D, respectively, and surround the upper ends of the outer walls 21A to 21D with the gaps G being provided therebetween.
- the gap G in Fig. 5 indicates a space between the outer peripheral wall 55C and the rib 52C.
- the ribs 52A to 52D of the lid member 50 and the outer walls 21A to 21D of the container 20 are thermally welded, respectively, and the lid partitions 54 of the lid member 50 and the partitions 23 of the container 20 are thermally welded, respectively. This achieves the structure of sealing the cell chambers 25 of the container 20.
- the lid member 50 is provided with a positive electrode terminal 60A and a negative electrode terminal 60B near respective ends in the X direction.
- the positive electrode terminal 60A is structured identically to the negative electrode terminal 60B.
- the structure of the positive electrode terminal 60A is exemplarily described below.
- the positive electrode terminal 60A includes a bush 61 and a pole 71.
- the bush 61 is made of metal such as lead alloy and has a hollow cylindrical shape.
- the bush 61 penetrates a cylindrical mount 53 that is formed integrally with the main body 51 of the lid member 50, and has an upper half protruding from the upper surface of the main body of the lid member 50.
- the upper half of the bush 61 exposed from the upper surface of the main body of the lid member 50 functions as a terminal connector and is assembled with a connecting terminal (not shown) such as a harness terminal.
- the lid member 50 is formed integrally with the bush 61 by pouring resin into a mold to which the bush 81 is inserted.
- the mount 53 is thus provided integrally with the bush 61 and covers the lower outer periphery of the bush 61 with no space being provided therebetween.
- the pole 71 is made of metal such as lead alloy and has a columnar shape.
- the pole 71 is inserted to the bush 61 from downward.
- the pole 71 has an upper end 72 joined by welding to the bush 61, and a proximal end 73 joined to the strap 42 of the element 40.
- the electrolyte solution expands in volume when frozen.
- the corners 27 (four corners at each of which the two outer walls 21A to 21D intersect to each other) of the container 20 are thus likely to crack.
- the container 20 has the four corners 27 that are made thicker than the outer walls 21 and are thus suppressed from cracking.
- the corner 27 of the container 20 has an inner peripheral arc of a radius "R” that is set to have a value "Ra” obtained by subtracting a thickness t of the outer wall 21 from a radius "Ro1" of an outer peripheral arc
- the corner 27 has a thickness equal to the thickness t of the outer wall 21 (see the following expression (1)).
- the radius Ra corresponds to a "reference radius” according to the present invention.
- the radius "R” of the inner peripheral arc of the corner 27 is set to "Rb" in the lead-acid battery 10, so as to have a thick portion 28 thicker than the thickness t of the outer wall 21.
- the thick portion 28 is formed so as to correspond to the range of the proximal portion 31.
- the thick portion 28 according to the present embodiment is formed in the range from the upper end of the corner 27 to the tapered portion 34 (the range H1 indicated in Fig. 3 ).
- reference sign "La” indicates the arc in the case where the radius of the inner peripheral arc is set to the "Ra”
- reference sign "Lb” indicates the arc in the case where the radius of the inner peripheral arc is set to "Rb”.
- the container 20 has an accommodation space of a size in the width direction of the plates 40A and 40B (the length in the Z direction in Fig. 3 ), and the size is determined in accordance with a distance D between inner surfaces Lin of the right and left narrowed portions 33. If the inner peripheral arc Lb of the corner 27 is set within the range not inwardly beyond the narrowed portion 33, the accommodation space does not change in the width direction of the plates 40A and 40B.
- the radius "Rb" of the arc Lb is determined such that the arc “Lb” does not shift inward (downward in Fig. 6 ) beyond the inner surface "Lin” of the narrowed portion 33 of the container.
- the arc “Lb” is located outside (above in Fig. 6 ) the inner surface “Lin” in this configuration.
- the corner 27 can be thus thickened with no reduction in accommodation space of the container 20. This achieves the configuration according to the present invention "the inner peripheral surface (the arc Lb in this example) of the corner 28 is located outside the internal space (outside the container in this example) with respect to the inner peripheral surface of the narrowed portion 33 (the inner surface Lin in this example)".
- the inner surface "Lin” of the narrowed portion 33 includes both an inner surface “Ld” appearing to be stepped parallelly from an inner surface “Le” of the proximal portion 31, and an inner surface “Lc” of the arc between the respective ends in the X direction.
- the arc "Lb” is located outside at least the arc “Lc” in the inner surface "Lin"
- the radius Rb of the arc Lb is thus set to have a value as large as possible within the range where the arc "Lb” is not overlapped with the arc "Lc” in this example.
- this portion has a thickness equal to the thickness t of the outer wall 21.
- the corner 27 of the container 20 in the lead-acid battery 10 is thickened only in the range H1 corresponding to the proximal portion 31 so as to exceed the thickness t of the outer wall 21, whereas the thickness in the range H2 corresponding to the narrowed portion 33 is equal to the thickness t of the outer wall 21.
- the arcs at the corner 27 have the following exemplary numerical values.
- the outer peripheral arc Ro1 is 5 mm
- the inner peripheral arc Ra is 3 mm
- the inner peripheral arc Rb is 5 mm
- the thickness t of the outer wall 21 is 2 mm.
- the outer peripheral arc Ro2 is 5 mm and the inner peripheral arc Rc is 3 mm.
- the range H1 of the thick portion 28 is larger than the range H2 of the narrowed portion 33 in terms of the size relation therebetween.
- the corner 27 is mainly thin.
- the corner 27 has rigidity that is mainly effected by the thinner portion and is not very high.
- the corner 27 is not durable against expansion in volume and is likely to crack at the thinner portion.
- the thickened range H1 is larger, the corner 27 has rigidity that is mainly effected by the thicker portion and is very high. The corner 27 is thus durable against expansion in volume and can be suppressed from cracking.
- the range “H1” corresponds to "the entire length of the thick portion 28 in the extending direction (the Y direction) of the corner” in the present invention
- the range “H2” corresponds to "the entire length of the narrowed portion 33 in the extending direction (the Y direction) of the corner” in the present invention.
- the range corresponding to the tapered portion 34 in the corner 27 is a reducing section of the arc, and the inner peripheral arc at the corner 27 is changed in size from "Rb" to "Rc" in this section. Provision of such an arc reducing section eliminates a large change in shape, and stress is thus unlikely to concentrate locally. This configuration can thus further suppress crack at the corner 27.
- the corner 27 of the container 20 is thickened in the lead-acid battery 10. This configuration can suppress a crack at the corner 27 due to expansion in volume.
- the lead-acid battery 10 is a liquid lead-acid battery and the container 20 contains a large amount of flowable electrolyte solution, and is thus largely influenced by expansion in volume. The corner 27 is thus likely to crack.
- the present invention is effective to this case.
- the corner 27 of the container 20 is thickened inward and the container 20 does not need to be changed in outer shape. Moreover, the corner 27 of the container 20 is thickened within the range not inwardly beyond the narrowed portion 33. This configuration does not reduce the accommodation space of the container 20 (the accommodation space in the width direction of the plates 40A and 40B). Accordingly, insertability and size of each of the plates 40A and 40B can be kept while the corner 27 of the container 20 can be suppressed from cracking.
- the inner periphery of the corner 27 has the arc shape. Stress is thus unlikely to concentrate at one point and the corner 27 can be further suppressed from cracking.
- the container 20 includes the four outer walls 21A to 21D and the bottom wall 22, and has a box shape that opens upward.
- the outer walls 21A to 21D expand when the electrolyte solution is frozen and increased in volume, and thus stress concentrates at the corner 27 at which two of the outer walls 21A to 21D intersect and a crack is likely to occur. Because the corner 27 at which two of the outer walls 21A to 21D intersect is reinforced as the thick portion 28, which otherwise is likely to cause a crack, in the lead-acid battery 10, the container 20 is further suppressed from cracking.
- the narrowed portion 33 is disposed at a bottom side of the outer walls 21B, 21S.
- a crack is likely to occur at the top side in which a larger amount of electrolyte solution is contained and the volume expansion of the electrolyte solution in accordance with freezing thereof is larger.
- the top side has a higher thermal conductivity than the bottom side, and thus the electrolyte solution is likely to frozen and unfreezes depending on the variation of the environmental temperature.
- the temperature of the electrolyte solution in the top side is lowered due to the influence of the pole 71 and the electrolyte solution begins to be frozen from the top side.
- the environmental temperature exceeds the freezing point, the temperature of the electrolyte solution in the top side rises due to the influence of the pole 71 and the electrolyte solution begins to defreeze from the top side. In this manner, the electrolyte solution in the top side is likely to frozen and unfreezes depending on the variation of the environmental temperature, and the volume thereof expands and contracts frequently.
- the corner 27 closer to the opening and the top side is likely to crack.
- a portion that is closer to the opening and top side than the narrowed portion 33 comprises the thick portion 28.
- the corner 27 closer to the opening side where a crack is likely to occur is reinforced by the thick portion 28, and therefore the container 20 is further suppressed from cracking.
- the lead-acid battery 10 has the gaps G between the ribs 52 and the outer peripheral walls 55, so that the container 20 can easily warp in the area near the opening.
- the lead-acid battery 10 is thus provided with the thick portion 28 in the easily warped area near the opening of the container 20. Accordingly, the corner 27 can be further suppressed from cracking.
- the area near the opening is closer to the opening of the container than the narrowed portion 33.
- the corner 27 according to the embodiment 1 is thickened by increasing the radius R of the inner peripheral arc.
- the corner 27 according to the embodiment 2 is thickened by having the inner surface slanted to the outer wall 21 (the shape of the container 20 when viewed in the planar direction.)
- the inner surface of the corner 27 of the container 20 is slanted at 45 degrees in the range corresponding to the proximal portion 31 of the outer wall 21 (the range indicated as the size H1 in Fig. 3 ).
- a length S of a slant line Ls in the X direction (as well as in the Z direction), in this example, is larger than the radius Ra of the arc La as indicated in Fig. 8 .
- the corner 27 can be thickened similarly to the embodiment 1 also by slanting the inner surface of the corner 27. This configuration can suppress a crack at the corner 27 due to expansion in volume.
- the slant line Ls is located outside (above in Fig. 8 ) the container 20 with respect to the inner surface Lin of the narrowed portion 33. This configuration does not reduce the accommodation space of the container 20 as in the embodiment 1. Accordingly, insertability and size of each of the plates 40A and 40B can be kept while the corner 27 of the container 20 can be suppressed from cracking.
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Sealing Battery Cases Or Jackets (AREA)
- Secondary Cells (AREA)
Claims (7)
- Batterie au plomb-acide (10) comprenant :un élément de production d'énergie (40) ; etun contenant (20) accueillant l'élément de production d'énergie (40) et comprenant une pluralité de parois extérieures (21A à 21D) et une paroi inférieure (22), etayant une forme de boîte dotée d'une ouverture dans une direction, le contenant (20) présentant une partie respective plus étroite (33) qui se situe au niveau de parois extérieures opposées (21B, 21D) et qui réduit un espace intérieur ;caractérisée en ce que :la partie plus étroite (33) est disposée sur un côté inférieur des parois extérieures (21B, 21D) ;à des coins (27) auxquels deux respectives des parois extérieures (21A à 21D) se rencontrent, le contenant (20) comporte une partie épaisse (28) qui est épaissie vers l'intérieur en direction de l'espace intérieur ;la partie épaisse (28) se situe au niveau d'une partie plus proche de l'ouverture que la partie plus étroite (33) ; etles coins (27) présentent une surface périphérique intérieure en arc ou inclinée, située à l'extérieur d'une surface périphérique intérieure de la partie plus étroite (33) dans l'espace intérieur,dans laquelle la partie épaisse (28) des coins est épaissie vers l'intérieur sur une étendue n'allant pas vers l'intérieur au-delà de la partie plus étroite (33).
- Batterie au plomb-acide (10) selon la revendication 1, dans laquelle les coins (27), s'ils sont d'une épaisseur égale à celle des parois extérieures (21A à 21D), ont un rayon périphérique intérieur défini comme un rayon de référence, et
le rayon périphérique intérieur des coins (27) est supérieur au rayon de référence sur une étendue n'allant pas vers l'intérieur au-delà de la surface périphérique intérieure de la partie plus étroite (33). - Batterie au plomb-acide (10) selon la revendication 1, dans laquelle les coins (27) présentent une surface intérieure inclinée à partir des parois extérieures (21A à 21D) sur une étendue n'allant pas vers l'intérieur au-delà de la partie plus étroite (33).
- Batterie au plomb-acide (10) selon la revendication 1, dans laquelle la partie épaisse (28) présente une longueur entière dans une direction dans laquelle s'étendent les coins (27), la longueur entière étant supérieure à une longueur entière de la partie plus étroite (33) dans la direction dans laquelle s'étendent les coins (27).
- Batterie au plomb-acide (10) selon l'une quelconque des revendications 1 à 4, dans laquelle l'élément de production d'énergie (40) est un élément qui comporte une électrode plane positive et une électrode plane négative disposées en couches alternées, un séparateur étant intercalé entre elles, et
la partie plus étroite (33) du contenant (20) est plus étroite dans une direction croisant une direction de disposition en couches de l'élément de production d'énergie (40). - Batterie au plomb-acide (10) selon l'une quelconque des revendications 1 à 5, dans laquelle le contenant (20) contient une solution électrolytique fluide.
- Batterie au plomb-acide (10) selon l'une quelconque des revendications 1 à 6, comprenant en outre un élément formant couvercle (50) obturant l'ouverture du contenant (20), dans laquelle :
l'élément formant couvercle (50) présente des nervures (52A à 52D) jointes aux parois extérieures (21A à 21D) du contenant (20), et des parois périphériques (55A à 55D) qui sont espacées des nervures (52A à 52D) et qui entourent les parois extérieures (21A à 21D) du contenant (20).
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2013261555 | 2013-12-18 | ||
JP2014198342A JP6303960B2 (ja) | 2013-12-18 | 2014-09-29 | 鉛蓄電池 |
Publications (2)
Publication Number | Publication Date |
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EP2887419A1 EP2887419A1 (fr) | 2015-06-24 |
EP2887419B1 true EP2887419B1 (fr) | 2019-01-09 |
Family
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Application Number | Title | Priority Date | Filing Date |
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EP14194733.3A Active EP2887419B1 (fr) | 2013-12-18 | 2014-11-25 | Batterie d'acide de plomb |
Country Status (4)
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US (1) | US10115936B2 (fr) |
EP (1) | EP2887419B1 (fr) |
JP (1) | JP6303960B2 (fr) |
CN (1) | CN104733650B (fr) |
Families Citing this family (1)
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EP3399571A1 (fr) | 2017-05-05 | 2018-11-07 | Constellium Singen GmbH | Compartiment de batteries pour vehicules electriques |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2002198087A (ja) * | 2000-12-27 | 2002-07-12 | Furukawa Battery Co Ltd:The | 鉛蓄電池 |
JP2007227394A (ja) * | 2007-04-10 | 2007-09-06 | Matsushita Electric Ind Co Ltd | 角型二次電池 |
Family Cites Families (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1796034A (en) * | 1930-05-24 | 1931-03-10 | Lyndon Edward | Battery container |
GB398630A (en) * | 1931-08-03 | 1933-09-21 | Bosch Robert | Improvements in or relating to electric accumulators |
FR1595807A (fr) * | 1967-12-04 | 1970-06-15 | ||
JPH0414847Y2 (fr) * | 1986-07-10 | 1992-04-03 | ||
JPH0415149A (ja) | 1990-05-07 | 1992-01-20 | Y M Shokai:Kk | 車輌用バックミラー装置 |
JPH0414847A (ja) | 1990-05-08 | 1992-01-20 | Fujitsu Ltd | 半導体集積回路 |
DE9115163U1 (fr) * | 1991-12-06 | 1993-04-08 | Robert Bosch Gmbh, 7000 Stuttgart, De | |
JP3015667B2 (ja) * | 1994-05-31 | 2000-03-06 | 三洋電機株式会社 | 密閉形の角形電池 |
US20050238955A1 (en) * | 2004-04-26 | 2005-10-27 | Hooke John W | Battery and battery terminal structure and method of manufacture |
JP5266759B2 (ja) * | 2006-08-04 | 2013-08-21 | 株式会社Gsユアサ | 鉛蓄電池 |
JP4362789B2 (ja) * | 2007-07-23 | 2009-11-11 | トヨタ自動車株式会社 | 電池 |
DE102007061662A1 (de) * | 2007-12-18 | 2009-06-25 | Vb Autobatterie Gmbh & Co. Kgaa | Akkumulator |
JP5472671B2 (ja) * | 2008-04-14 | 2014-04-16 | トヨタ自動車株式会社 | 電池およびその製造方法 |
WO2012141608A1 (fr) * | 2011-04-12 | 2012-10-18 | Общеcтво С Ограниченной Отвественностью "Новогородская Аккумуляторная Компания" | Accumulateur plomb-acide |
JP2013254628A (ja) | 2012-06-06 | 2013-12-19 | Toyota Industries Corp | 蓄電装置 |
-
2014
- 2014-09-29 JP JP2014198342A patent/JP6303960B2/ja active Active
- 2014-11-17 CN CN201410652691.3A patent/CN104733650B/zh active Active
- 2014-11-25 EP EP14194733.3A patent/EP2887419B1/fr active Active
- 2014-12-17 US US14/573,917 patent/US10115936B2/en active Active
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2002198087A (ja) * | 2000-12-27 | 2002-07-12 | Furukawa Battery Co Ltd:The | 鉛蓄電池 |
JP2007227394A (ja) * | 2007-04-10 | 2007-09-06 | Matsushita Electric Ind Co Ltd | 角型二次電池 |
Also Published As
Publication number | Publication date |
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CN104733650A (zh) | 2015-06-24 |
EP2887419A1 (fr) | 2015-06-24 |
JP2015135803A (ja) | 2015-07-27 |
JP6303960B2 (ja) | 2018-04-04 |
US10115936B2 (en) | 2018-10-30 |
US20150171381A1 (en) | 2015-06-18 |
CN104733650B (zh) | 2019-04-30 |
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